The city gate of Ningyi Ancient Town was written in Pu'er Ancient Town. It began to feel very strange. Why did you write Pu'er Ancient Town in Ningyi? After checking, I learned that Ningyi was called Pu'er, and Pu'er was originally called Simao. The name was changed to Ningyi when it was used. Ningyi is a quiet small town with a long history. Ningyi was also the place where all ethnic groups vowed to unite and build an equal socialist society in 1951.